From bc1c8e4eee79646b9ae10ededed06a569c7c2bc9 Mon Sep 17 00:00:00 2001
From: Jack Yu <jack.yu@realtek.com>
Date: Mon, 26 Jul 2021 09:15:41 +0000
Subject: [PATCH] ASoC: rt1015: Remove unnecessary flush work on rt1015 driver
Git-commit: bc1c8e4eee79646b9ae10ededed06a569c7c2bc9
Patch-mainline: v5.15-rc1
References: bsc#1192354

Remove workqueue of flush work in rt1015 driver since we don't need it
after internal discussion, and there is no impact on performance
without this workqueue.

Signed-off-by: Jack Yu <jack.yu@realtek.com>
Link: https://lore.kernel.org/r/3ef458a6ad754589b96d6a94abda1e55@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/codecs/rt1015.c | 39 +--------------------------------------
 sound/soc/codecs/rt1015.h |  2 --
 2 files changed, 1 insertion(+), 40 deletions(-)

diff --git a/sound/soc/codecs/rt1015.c b/sound/soc/codecs/rt1015.c
index 9238f12999aa..b3e69bf245dd 100644
--- a/sound/soc/codecs/rt1015.c
+++ b/sound/soc/codecs/rt1015.c
@@ -547,31 +547,6 @@ static int rt1015_bypass_boost_put(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
-static void rt1015_flush_work(struct work_struct *work)
-{
-	struct rt1015_priv *rt1015 = container_of(work, struct rt1015_priv,
-						flush_work.work);
-	struct snd_soc_component *component = rt1015->component;
-	unsigned int val, i;
-
-	for (i = 0; i < 200; ++i) {
-		usleep_range(1000, 1500);
-		dev_dbg(component->dev, "Flush DAC (retry:%u)\n", i);
-		regmap_read(rt1015->regmap, RT1015_CLK_DET, &val);
-		if (val & 0x800)
-			break;
-	}
-
-	regmap_write(rt1015->regmap, RT1015_SYS_RST1, 0x0597);
-	regmap_write(rt1015->regmap, RT1015_SYS_RST1, 0x05f7);
-	regmap_write(rt1015->regmap, RT1015_MAN_I2C, 0x0028);
-
-	if (val & 0x800)
-		dev_dbg(component->dev, "Flush DAC completed.\n");
-	else
-		dev_warn(component->dev, "Fail to flush DAC data.\n");
-}
-
 static const struct snd_kcontrol_new rt1015_snd_controls[] = {
 	SOC_SINGLE_TLV("DAC Playback Volume", RT1015_DAC1, RT1015_DAC_VOL_SFT,
 		127, 0, dac_vol_tlv),
@@ -630,10 +605,6 @@ static int r1015_dac_event(struct snd_soc_dapm_widget *w,
 		}
 		break;
 
-	case SND_SOC_DAPM_POST_PMU:
-		regmap_write(rt1015->regmap, RT1015_MAN_I2C, 0x00a8);
-		break;
-
 	case SND_SOC_DAPM_POST_PMD:
 		if (rt1015->bypass_boost == RT1015_Enable_Boost) {
 			snd_soc_component_write(component,
@@ -653,8 +624,6 @@ static int r1015_dac_event(struct snd_soc_dapm_widget *w,
 				RT1015_SYS_RST2, 0x0b9a);
 		}
 		rt1015->dac_is_used = 0;
-
-		cancel_delayed_work_sync(&rt1015->flush_work);
 		break;
 
 	default:
@@ -687,8 +656,6 @@ static int rt1015_amp_drv_event(struct snd_soc_dapm_widget *w,
 		}
 		break;
 	case SND_SOC_DAPM_POST_PMU:
-		if (rt1015->hw_config == RT1015_HW_28)
-			schedule_delayed_work(&rt1015->flush_work, msecs_to_jiffies(10));
 		msleep(rt1015->pdata.power_up_delay_ms);
 		break;
 	default:
@@ -702,7 +669,7 @@ static const struct snd_soc_dapm_widget rt1015_dapm_widgets[] = {
 		NULL, 0),
 	SND_SOC_DAPM_AIF_IN("AIFRX", "AIF Playback", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0,
-		r1015_dac_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
+		r1015_dac_event, SND_SOC_DAPM_PRE_PMU |
 		SND_SOC_DAPM_POST_PMD),
 	SND_SOC_DAPM_OUT_DRV_E("Amp Drv", SND_SOC_NOPM, 0, 0, NULL, 0,
 			rt1015_amp_drv_event, SND_SOC_DAPM_PRE_PMU |
@@ -1028,7 +995,6 @@ static int rt1015_probe(struct snd_soc_component *component)
 		snd_soc_component_get_drvdata(component);
 
 	rt1015->component = component;
-	INIT_DELAYED_WORK(&rt1015->flush_work, rt1015_flush_work);
 
 	return 0;
 }
@@ -1037,7 +1003,6 @@ static void rt1015_remove(struct snd_soc_component *component)
 {
 	struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);
 
-	cancel_delayed_work_sync(&rt1015->flush_work);
 	regmap_write(rt1015->regmap, RT1015_RESET, 0);
 }
 
@@ -1180,8 +1145,6 @@ static int rt1015_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
-	rt1015->hw_config = (i2c->addr == 0x29) ? RT1015_HW_29 : RT1015_HW_28;
-
 	ret = regmap_read(rt1015->regmap, RT1015_DEVICE_ID, &val);
 	if (ret) {
 		dev_err(&i2c->dev,
diff --git a/sound/soc/codecs/rt1015.h b/sound/soc/codecs/rt1015.h
index 14344532048e..c9f636af7fd1 100644
--- a/sound/soc/codecs/rt1015.h
+++ b/sound/soc/codecs/rt1015.h
@@ -444,8 +444,6 @@ struct rt1015_priv {
 	int bypass_boost;
 	int dac_is_used;
 	int cali_done;
-	int hw_config;
-	struct delayed_work flush_work;
 };
 
 #endif /* __RT1015_H__ */
-- 
2.26.2